How Climate Change Scorched the Nation in 2012
Total Page：16
File Type：pdf, Size：1020Kb
HOW CLIMATE CHANGE SCORCHED THE NATION IN 2012 NatioNal Wildlife federatioN i. Intro- ductioN Photo: Flickr/woodleywonderworks is climate change ruining our summers? It is certainly altering them in dramatic ways, and rarely for the better. The summer of 2012 has been full of extreme weather events connected to climate change. Heat records have been broken across the country, drought conditions forced the United States Department of Agriculture (USDA) to make the largest disaster declaration in U.S. history, and wildfires have raged throughout the West. New research by world-renowned climate scientist James Hansen con- firms that the increasingly common extreme weather events across the country, like record heat waves and drought, are linked to climate change.1 This report examines those climate change impacts whose harm is acutely felt in the summer. Heat waves; warming rivers, lakes, and streams; floods; drought; wildfires; and insect and pest infestations are problems we are dealing with this summer and what we are likely to face in future summers. As of August 23rd, 7 MILLION 2/3 of the country has experienced drought this acres of wildlife habitat and communities summer, much of it labeled “severe” 4 have burned in wildfires2 40 20 60 More than July’s average0 continental U.S. temperature 80 -20 113 MILLION 77.6°F100 people in the U.S. were in areas under 3.3°F above-40 the 20th-century average. 3 5 extreme heat advisories as of June 29 This was the-60 warmest month120 on record 0F NatioNal Wildlife federatioN Unfortunately, hot summers like this will occur much more frequently in years ahead. Climate change means far more than hotter weather: as the atmosphere heats up, climate systems are altered in ways that impact forests, lakes, prairies, rivers, wetlands, and other habitats, as well as the communities and wildlife that depend on them. Average water temperatures in streams, rivers, lakes, and oceans are increasing, precipitation patterns are changing, and extreme weather emergencies such as droughts and floods are becoming both more frequent and severe.6 To understand how 2012 represents what we can expect in the future, we must understand how climate change is connected to the weather we are experiencing. A recent scientific study published in the Bulletin of the American Meteorological Society, “Explaining Extreme Events of 2011 From a Climate Perspective”, found that some of the weather extremes around the world have become far more likely because of climate change. For example, climate change made the severe heat wave Texas experienced in 2011 twenty times more likely to occur than it would have been in the 1960s.7 Climate change made this heat wave hotter and last longer. Penn State geosciences professor Richard Alley puts it this way: “Humans have made some extreme weather events more likely, and they are happen- ing. Just as a back-street gambler might beat someone in an honest game but has a better chance with loaded dice, nature might have caused this summer’s weather but we gave it a boost.” 8 By taking action now to reduce the amount of carbon pollution from the nation’s largest sources, and providing support for wildlife-friendly wind, solar, geothermal and biomass energy, we can reduce the impact of a changing climate and power a new clean energy economy for all americans. if we don’t enact the solutions we have on hand to reduce carbon pollution, wildlife, people, and our summers will suffer. NatioNal Wildlife federatioN ii. heat the elderly, poor, and people of color are especially vul- Photo: Flickr/Elvert Barnes nerable to these effects.” 13 Not only are high daytime temperatures dangerous, high nighttime temperatures combined with high humidity put people at risk for heat- related illness and death because their bodies cannot recover from the heat they experienced during the day.14 It is not surprising that a warmer atmosphere High summer temperatures harm agriculture as well. is leading to more severe heat waves.9 Ac- Summer is the growing season for most crops, from cording to scientists from the National Oceanic Atmo- corn to soybeans to blueberries and cherries. Extreme spheric Administration (NOAA), 2010 is tied with 2005 as weather and climate conditions can thwart crop yields, the warmest year of the global surface temperature re- especially if they occur during critical growth or repro- cord. In the contiguous United States, 2010 was the 14th ductive phases of plant growth. Livestock are also sensi- consecutive year with an annual temperature above the tive to high temperatures, which can make it harder for long-term average. Nine of the warmest 10 years on re- them to gain weight, produce milk, and reproduce.15 cord have occurred since 2000, according to the NASA A summertime delight is a bowl of fresh cherries, but an Goddard Institute for Space Studies.10 If current condi- unusual spring heat wave ruined many of Michigan’s fruit tions continue, 2012 will be even hotter. In the United crops this year. Many fruit trees blossomed nearly three States, July 2012 was the single hottest month recorded weeks earlier than normal.16 Then, a sudden end to Michi- since measurements began in the 1890s. As syndicated gan’s warm March followed by overnight freezes in April newspaper columnist Eugene Robinson recently noted, devastated many of the state’s largest fruit farms. The “Welcome to the rest of our lives.”11 USDA’s Michigan field office described the impact as the Heat waves as severe as those we have seen this sum- “worst weather damage to fruit in the state in the past mer are not just unpleasant; they are dangerous to hu- half-century.” Cherries bore the brunt of the heat. Michi- man health. Hot and sunny days with little or no wind gan produced 70.9 percent of the nation’s tart cherries in provide ideal conditions for the build-up of dangerous 2010. The state is expected to harvest a mere 2 million levels of ground-level ozone pollution.12 According to pounds of tarts this year, down from 135 million pounds National Wildlife Federation (NWF) climate scientist Dr. in 2010 and 266 million pounds in 2009, according to the Amanda Staudt, “Global warming is bringing more fre- Michigan Frozen Food Packers Association. Michigan’s quent and severe heat waves, and the result will be seri- apples, peaches, and juice grapes were also harmed by ous for vulnerable populations. That means air pollution the abrupt temperature changes this spring.17 The devas- in urban areas could get worse, bringing increased risk tation to growers, harvesters, wholesalers, and retailers of heart attacks, strokes and asthma attacks. Children, cannot be underestimated or ignored. NatioNal Wildlife federatioN Portrait: Flickr/lpwines Photo: Flickr/Jennifer Pack Portrait: Photo: Flickr/Jennifer Flickr/lpwines Bob Sutherland, owner of Cherry Republic in Michigan, has experienced this crop devastation firsthand. The heat of 2012 has impacted him, his cherry business and the community. “I have never seen a summer like this before,” said With August being the rush of their summer business, Southerland. “We were really counting on having a Sutherland and his fellow farmers are just barely re- good season to fill back up, as 2012 follows up two pre- acting to what has happened this year, but looking for- vious years that had harvests also below average, and ward, he knows that it is going to be a challenge: now we have nothing left in storage or in the freezer.” “I think climate change has moved this problem [crop As a business, Southerland explains that they have devastation] from a once-a-century to a once-a-de- been unique in trying to be really light about the sever- cade occurrence, and I don’t know where it will end ity of the crop devastation to the customers and to the up—or if it will start happening more often,” said community; they’ve been getting cherries from Poland Southerland. “I don’t know how to get it into people’s and flying the Polish flag in the shop. Cherry Republic heads that they need to change their habits and their has also come to a temporary, year-long “truce” with carbon footprint.” cranberries and are mixing them with cherries to keep prices down. We’re just a cherry company—we “We are already thinking about back-up plans, but it do cherries. We can’t just move is hard; We’re just a cherry company—we do cherries. crops. We can’t just move crops,” said Southerland. “But we have to be prepared for this to happen again.” iii. W ARMiNG Water Thousands of fish across the United States have already died this summer: • 1,000 fish, including commercially Vasudev Ram Photo: valuable bass, shad and catfish were found dead in Heron Pond in Ohio. 19 The stench of rotten fish was common across • Nearly 58,000 fish, including 37,000 rural and urban areas alike this summer as sturgeon worth nearly $10 million, fish died by the thousands. Extreme heat caused died along 42 miles of the Des Moines warmer water temperatures, resulting in fatal conse- 20 quences for wildlife. When streams get too warm, oxy- River. gen levels and fish growth rates decline, and fish can be- come more susceptible to toxins, parasites, and disease. • 6,000 gizzard shad and 600 perch If water temperatures stay too warm for too long, a river died in a Delaware lake.21 may become an unsuitable habitat for fish. In general, locales have found that when the average daily air tem- • Fish kills attributable to “hot” water perature in the warmest summer months is greater than were reported in Michigan, Minnesota, 69.8° F the “thermal limit” has been broached for most Pennsylvania, Wisconsin, Indiana, and adult salmon, steelhead, and trout species.18 Illinois.22 Northern pike, a cool-water species, are among numer- ous fish species threatened because they are unable to adjust to higher water temperatures sustained for more than a few days.